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题名: Low-temperature CO oxidation over CuO-CeO2/SiO2 catalysts: Effect of CeO2 content and carrier porosity
作者: Luo, Jingjie1;  Chu, Wei1;  Xu, Huiyuan1;  Jiang, Chengfa1;  Zhang, Tao2
关键词: CuO-CeO2 based catalyst ;  silica carrier porosity ;  carbon monoxide oxidation ;  O-2-TPD
刊名: JOURNAL OF NATURAL GAS CHEMISTRY
发表日期: 2010-07-01
DOI: 10.1016/S1003-9953(09)60088-8
卷: 19, 期:4, 页:355-361
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Energy & Fuels ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Engineering
英文摘要: The effects of CeO2 contents and silica carrier porosity with their pore diameters ranging from 5.2 nm to 12.5 nm of CuO-CeO2/SiO2 catalysts in CO oxidation were investigated. The catalysts were characterized by N-2 adsorption/desorption at low temperature, X-ray diffraction (XRD), temperature-programmed reduction by H-2 (H-2-TPR), oxygen temperature programmed desorption (O-2-TPD) and X-ray photoelectron spectroscopy (XPS). The results suggested that, the ceria content and the porosity of SiO2 carrier possessed great impacts on the structures and catalytic performances of CuO-CeO2/SiO2 catalysts. When appropriate content of CeO2 (Ce content <= 8 wt%) was added, the catalytic activity was greatly enhanced. In the catalyst supported on silica carrier with larger pore diameter, higher dispersion of CuO was observed, better agglomeration-resistant capacity was displayed and more lattice oxygen could be found, thus the CuO-CeO2 supported on Si-1 showed higher catalytic activity for low-temperature CO oxidation.
关键词[WOS]: CUO/CEO2 CATALYSTS ;  SURFACE-AREA ;  TPR ;  IDENTIFICATION ;  SPECTROSCOPY ;  STABILITY ;  SYSTEMS ;  OXIDES ;  OXYGEN ;  CERIA
语种: 英语
WOS记录号: WOS:000281083500001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141723
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Sichuan Univ, Dept Chem Engn, Chengdu 610065, Sichuan, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Luo, Jingjie,Chu, Wei,Xu, Huiyuan,et al. Low-temperature CO oxidation over CuO-CeO2/SiO2 catalysts: Effect of CeO2 content and carrier porosity[J]. JOURNAL OF NATURAL GAS CHEMISTRY,2010,19(4):355-361.
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